CN111720133A - Supporting device and shield tunneling equipment - Google Patents
Supporting device and shield tunneling equipment Download PDFInfo
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- CN111720133A CN111720133A CN202010605296.5A CN202010605296A CN111720133A CN 111720133 A CN111720133 A CN 111720133A CN 202010605296 A CN202010605296 A CN 202010605296A CN 111720133 A CN111720133 A CN 111720133A
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- 230000005641 tunneling Effects 0.000 title description 27
- 230000000712 assembly Effects 0.000 claims abstract description 30
- 238000000429 assembly Methods 0.000 claims abstract description 30
- 230000033001 locomotion Effects 0.000 claims abstract description 10
- 239000012634 fragment Substances 0.000 claims description 4
- 238000010276 construction Methods 0.000 description 12
- 239000000463 material Substances 0.000 description 12
- 239000011435 rock Substances 0.000 description 12
- 230000005540 biological transmission Effects 0.000 description 8
- 230000002349 favourable effect Effects 0.000 description 8
- 239000002689 soil Substances 0.000 description 8
- 229910000831 Steel Inorganic materials 0.000 description 6
- 230000009471 action Effects 0.000 description 6
- 230000009286 beneficial effect Effects 0.000 description 6
- 238000000034 method Methods 0.000 description 6
- 239000010959 steel Substances 0.000 description 6
- 238000004519 manufacturing process Methods 0.000 description 5
- 238000009434 installation Methods 0.000 description 4
- 238000013461 design Methods 0.000 description 3
- 230000007246 mechanism Effects 0.000 description 3
- 230000008569 process Effects 0.000 description 3
- 230000006978 adaptation Effects 0.000 description 2
- 230000015572 biosynthetic process Effects 0.000 description 2
- 238000006243 chemical reaction Methods 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 238000013459 approach Methods 0.000 description 1
- 238000009412 basement excavation Methods 0.000 description 1
- 238000004891 communication Methods 0.000 description 1
- 239000002131 composite material Substances 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 238000006073 displacement reaction Methods 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- 210000001503 joint Anatomy 0.000 description 1
- 238000005191 phase separation Methods 0.000 description 1
- 238000004904 shortening Methods 0.000 description 1
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- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK DRILLING; MINING
- E21D—SHAFTS; TUNNELS; GALLERIES; LARGE UNDERGROUND CHAMBERS
- E21D9/00—Tunnels or galleries, with or without linings; Methods or apparatus for making thereof; Layout of tunnels or galleries
- E21D9/06—Making by using a driving shield, i.e. advanced by pushing means bearing against the already placed lining
- E21D9/08—Making by using a driving shield, i.e. advanced by pushing means bearing against the already placed lining with additional boring or cutting means other than the conventional cutting edge of the shield
- E21D9/087—Making by using a driving shield, i.e. advanced by pushing means bearing against the already placed lining with additional boring or cutting means other than the conventional cutting edge of the shield with a rotary drilling-head cutting simultaneously the whole cross-section, i.e. full-face machines
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- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK DRILLING; MINING
- E21D—SHAFTS; TUNNELS; GALLERIES; LARGE UNDERGROUND CHAMBERS
- E21D11/00—Lining tunnels, galleries or other underground cavities, e.g. large underground chambers; Linings therefor; Making such linings in situ, e.g. by assembling
- E21D11/04—Lining with building materials
- E21D11/08—Lining with building materials with preformed concrete slabs
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- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK DRILLING; MINING
- E21D—SHAFTS; TUNNELS; GALLERIES; LARGE UNDERGROUND CHAMBERS
- E21D11/00—Lining tunnels, galleries or other underground cavities, e.g. large underground chambers; Linings therefor; Making such linings in situ, e.g. by assembling
- E21D11/40—Devices or apparatus specially adapted for handling or placing units of linings or supporting units for tunnels or galleries
-
- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK DRILLING; MINING
- E21D—SHAFTS; TUNNELS; GALLERIES; LARGE UNDERGROUND CHAMBERS
- E21D9/00—Tunnels or galleries, with or without linings; Methods or apparatus for making thereof; Layout of tunnels or galleries
- E21D9/06—Making by using a driving shield, i.e. advanced by pushing means bearing against the already placed lining
- E21D9/0621—Shield advancing devices
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- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK DRILLING; MINING
- E21D—SHAFTS; TUNNELS; GALLERIES; LARGE UNDERGROUND CHAMBERS
- E21D9/00—Tunnels or galleries, with or without linings; Methods or apparatus for making thereof; Layout of tunnels or galleries
- E21D9/06—Making by using a driving shield, i.e. advanced by pushing means bearing against the already placed lining
- E21D9/08—Making by using a driving shield, i.e. advanced by pushing means bearing against the already placed lining with additional boring or cutting means other than the conventional cutting edge of the shield
- E21D9/087—Making by using a driving shield, i.e. advanced by pushing means bearing against the already placed lining with additional boring or cutting means other than the conventional cutting edge of the shield with a rotary drilling-head cutting simultaneously the whole cross-section, i.e. full-face machines
- E21D9/0873—Making by using a driving shield, i.e. advanced by pushing means bearing against the already placed lining with additional boring or cutting means other than the conventional cutting edge of the shield with a rotary drilling-head cutting simultaneously the whole cross-section, i.e. full-face machines the shield being provided with devices for lining the tunnel, e.g. shuttering
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- Engineering & Computer Science (AREA)
- Mining & Mineral Resources (AREA)
- Life Sciences & Earth Sciences (AREA)
- General Life Sciences & Earth Sciences (AREA)
- Geochemistry & Mineralogy (AREA)
- Geology (AREA)
- Environmental & Geological Engineering (AREA)
- Architecture (AREA)
- Structural Engineering (AREA)
- Civil Engineering (AREA)
- Lining And Supports For Tunnels (AREA)
Abstract
The invention provides a supporting device and shield equipment. Wherein, strutting arrangement includes: a first ring; the second ring is located the one end of first ring along the axis direction of first ring, and the second ring includes: the plurality of telescopic assemblies are sequentially connected and distributed along the circumferential direction of the axis of the first ring; wherein either telescopic assembly comprises a sprag which can move towards or away from the axis of the first ring during movement. According to the supporting device provided by the invention, the supporting device is directly connected with the first ring through at least one telescopic assembly, and the telescopic assembly comprises the inclined wedge block, so that the structure is simple and compact, the size is small, the mounting and the dismounting are convenient, the switching time of different working modes of the shield equipment is further favorably shortened, and the working efficiency of the shield equipment is improved.
Description
Technical Field
The invention relates to the technical field of tunnel tunneling equipment, in particular to a supporting device and shield equipment.
Background
At present, with the continuous development of the tunneling technology of the tunnel engineering, the composite shield machine is gradually and more applied to the tunnel engineering with complex geological conditions. Aiming at complex geological tunnel engineering with both soft soil stratum and hard rock stratum, a novel dual-mode shield machine capable of mutually switching between an EBP (soft soil stratum tunneling) mode and a TBM (hard rock stratum tunneling) mode is widely applied. When the dual-mode shield machine is used for tunneling in a soft soil stratum section in an EBP mode, the assembled duct pieces are used for providing tunneling counter force for equipment; when a TBM mode is adopted for tunneling in a hard rock stratum section, a supporting device is utilized to provide tunneling counter force for equipment.
However, the existing supporting device usually utilizes the tightening oil cylinder to drive the upper and lower supporting shoes to realize supporting, the upper and lower supporting shoes are connected with the force transmission ring through the clamping sleeve, the structure is complex, the switching of working modes is not facilitated, and further the working efficiency is influenced.
Disclosure of Invention
The present invention is directed to solving at least one of the problems of the prior art or the related art.
To this end, a first aspect of the invention proposes a support device.
A second aspect of the present invention proposes a shield apparatus.
In view of this, a first aspect of the present invention provides a supporting apparatus, comprising: a first ring; the second ring is located the one end of first ring along the axis direction of first ring, and the second ring includes: the plurality of telescopic assemblies are sequentially connected and distributed along the circumferential direction of the axis of the first ring; wherein either telescopic assembly comprises a sprag which can move towards or away from the axis of the first ring during movement.
The supporting device provided by the invention comprises a first ring and a second ring, wherein the second ring comprises a plurality of telescopic assemblies, the first ring is a force transmission ring, and the second ring is a tensioning ring. The plurality of telescopic assemblies are sequentially connected and distributed along the circumferential direction of the axis of the first ring to be spliced into a part of the second ring, any telescopic assembly comprises a wedge block, the wedge block can be close to or far away from the axis of the first ring in the moving process, and further when the telescopic assembly acts to enable the wedge block to be far away from the axis of the first ring, the wedge block can be abutted against the tunnel wall of the tunnel. When the telescopic assembly acts to enable the inclined wedge block to be close to the axis of the first ring, the inclined wedge block is separated from the tunnel wall, at the moment, the shield equipment can drive the second ring to advance through the first ring to perform the next circulation action, or the supporting device can be detached from the main body of the shield equipment to perform the EBP mode tunneling action suitable for the soft soil stratum section, so that the switching of the TBM mode tunneling and the EBP mode tunneling of the shield equipment is realized, and the application range of the product is expanded.
Furthermore, because the supporting device is directly connected with the first ring through at least one telescopic assembly, the sliding shoe of the supporting device in the related technology is prevented from being connected with the force transmission ring through the clamping sleeve, the structure is simple and compact, the size is small, the mounting and the dismounting are convenient, the switching between different working modes of the shield equipment is facilitated, the working mode switching efficiency of the shield equipment is improved, the working efficiency of the shield equipment is improved, meanwhile, the simple structure is favorable for reducing the manufacturing cost, and the shield equipment is suitable for popularization and application.
Furthermore, the telescopic assembly comprises a wedge block, namely the telescopic assembly is a wedge mechanism which is of a surface contact type structure and has a self-locking function, so that the reliability of the supporting device is improved, the requirements of different propulsion counter forces of the shield equipment can be met, the application range of products is enlarged, a good tunneling effect is guaranteed, and the use reliability of the products is improved.
Specifically, at least one telescopic component is connected with the first ring, and as the plurality of telescopic components are connected in sequence and connected with the first ring through different numbers of telescopic components, the frictional force of the inclined wedge blocks of the plurality of telescopic components and the tunnel wall in butt joint can provide the thrust for the forward movement of the shield equipment. Furthermore, on one hand, any telescopic assembly is connected with the first ring, namely each telescopic assembly is connected with the first ring, and on the other hand, one or two telescopic assemblies are connected with the first ring, or other numbers of telescopic assemblies are connected with the first ring, so that the requirements of different structures of the telescopic assemblies and the first ring can be met, and the application range is wide.
In addition, the supporting device in the above technical solution provided by the present invention may further have the following additional technical features:
in the above technical solution, further, the telescopic assembly further includes: the sliding frames are connected with each other, each sliding frame is provided with a sliding groove, the bottom wall of each sliding groove inclines downwards along the direction from the first ring to the second ring, and the inclined wedge blocks are positioned inside the sliding grooves; one end of the telescopic part is connected with the sliding frame, and the other end of the telescopic part is connected with the inclined wedge block; wherein, the flexible portion concertina movement drives the tapered wedge and removes along the spout, and the tapered wedge can be close to or keep away from the axis of first ring.
In this technical scheme, flexible subassembly still includes balladeur train and flexible portion, and wherein, adjacent balladeur train is connected, and the balladeur train is provided with the spout, and the diapire of spout is downward along the direction slope of first ring to the second ring, and the diapire slope of spout sets up promptly, and the tapered wedge is located the inside of spout, specifically, the face that the tapered wedge contacted with the diapire of spout is downward along the direction slope of first ring to the second ring, and the face that the tapered wedge contacted with the diapire of spout promptly is the inclined plane. When the telescopic part moves telescopically to drive the inclined wedge block to slide along the sliding groove from the second ring to the first ring, the inclined wedge block moves towards the direction far away from the axis of the first ring at the same time, so that the inclined wedge block can be abutted against the wall of the tunnel, namely the second ring is supported on the wall of the tunnel, the supporting operation is realized, and forward thrust is provided for shield equipment; when the telescopic part telescopic motion drives the tapered wedge to slide along the direction of the sliding groove from the first ring to the second ring, the tapered wedge moves towards the direction close to the axis of the first ring at the same time, so that the tapered wedge can be separated from the tunnel wall of the tunnel, and the shield equipment main body is convenient to drive the first ring and the second ring to advance or move.
In any of the above technical solutions, further, the second ring further includes: supporting part, a plurality of balladeur trains distribute in the both ends of supporting part, and the supporting part is connected with two adjacent balladeur trains, and supporting part and a plurality of balladeur trains splice into annular structure.
In this technical scheme, the second ring still includes the supporting part, a plurality of balladeur trains distribute at the both ends of supporting part, the supporting part is connected with two adjacent balladeur trains, supporting part and a plurality of balladeur trains splice into annular structure, supporting part and a plurality of flexible subassembly splice into the second ring promptly, wherein, the supporting part is used for contacting with the ground in tunnel, support a plurality of flexible subassemblies through the supporting part promptly, in order to guarantee that flexible subassembly action can reliably, go on smoothly, and then realize sloping wedge and hole wall looks butt or phase separation, and then guarantee the reliability of strutting arrangement work.
In any one of the above aspects, further, the support portion includes: the body is connected with the sliding frame; the landing leg sets up in the body, and the landing leg interval distributes in the body and keeps away from one side of the axis of first ring.
In this technical scheme, the supporting part includes body and landing leg, and the body is connected with the balladeur train, and the landing leg interval distributes in one side of the axis that first ring was kept away from to the body, promptly through the landing leg with the ground contact in tunnel in order to realize the supporting role, reduced the area of contact of supporting part and ground, and then be favorable to the supporting part to remove along with the removal of first ring, be favorable to improving the efficiency of advancing of shield structure equipment.
In any one of the above technical solutions, further, the body is provided with a groove structure, the groove structure penetrates through the body along the axis direction of the first ring, the groove structure and the support legs are located on the same side of the body, and the support legs are distributed on two sides of the groove structure.
In this technical scheme, be provided with groove structure through the body, groove structure and landing leg lie in the body with one side and along the axis direction of first ring run through the body, make in strutting arrangement working process, if the tunnel of the second ring towards one side of first ring subaerial has the rubble, during residual material such as dregs, can transport residual material to the second ring through groove structure and keep away from one side of first ring, and then can not influence the advancing of shield structure equipment, furtherly, when remaining material is less or be not convenient for transport, can put remaining material stand in groove structure, and then guarantee that strutting arrangement advances smoothly under the action of shield structure equipment main part, improve the work efficiency of shield structure equipment.
In any of the above technical solutions, further, any one of the telescopic assemblies is detachably connected to the first ring; the support portion is detachably connected with the first ring.
In the technical scheme, any telescopic component is detachably connected with the first ring, and the supporting part is detachably connected with the first ring, so that when the shield equipment tunnels in a hard rock stratum section in a TBM mode, any telescopic component and the supporting part are connected with the first ring, the first ring is connected with the main body of the shield equipment, and the friction force between the inclined wedges of the telescopic components and the wall of the tunnel can be used for providing reverse thrust for the forward movement of the shield equipment; when the shield equipment adopts the EBP mode to tunnel in the soft soil stratum section, the shield equipment main body is detached from the first ring, so that the assembled duct pieces can be utilized to provide tunneling thrust for the shield equipment, the switching of the working modes of the shield equipment is facilitated, the working efficiency is improved, and meanwhile, the structure is simple, and the manufacturing cost is reduced.
In any one of the above aspects, the telescopic part further includes: at least one hydraulic cylinder.
In this technical scheme, the pars contractilis includes at least one pneumatic cylinder, connects balladeur train and tapered wedge through the pneumatic cylinder promptly to drive the tapered wedge and slide along the spout, pneumatic cylinder control is sensitive, and is reliable, and can realize self-locking function, and then is favorable to improving the reliability of telescoping device work, improves the reliability of shield structure equipment work.
In any of the above technical solutions, further, the first ring includes: the ring comprises a plurality of fragments which are spliced into a first ring, and two adjacent fragments are detachably connected.
In this technical scheme, splice into first ring through a plurality of burst, adjacent two burst are for dismantling the connection for when needs use strutting arrangement, connect the quick installation that realizes each burst through dismantling and in order to splice into first ring, when need not use strutting arrangement, connect the quick dismantlement that realizes each burst through dismantling, and then can realize the first ring of quick assembly disassembly in the tunnel, make things convenient for shield structure equipment mode's switching, be favorable to improving work efficiency.
According to a second aspect of the present invention, there is provided a shield apparatus comprising: a main body; and the supporting device of any technical scheme of the first aspect, wherein the main body is detachably connected with the first ring.
The shield equipment provided by the invention comprises a main body and the supporting device of any technical scheme of the first aspect, wherein the main body is detachably connected with the first ring. Further, the main body includes a thrust cylinder detachably coupled to the first ring so that the thrust cylinder can be selectively coupled to or detached from the first ring according to a working mode of the shield apparatus.
In the above technical solution, further, the method further includes: and the segment erector is movably connected with the main body.
In the technical scheme, the shield equipment further comprises a segment erector, and when construction is carried out on a soft upper stratum, segments assembled and completed by the segment erector can provide forward pushing counter force for the shield equipment. It can be understood that when shield structure equipment is under construction in hard rock stratum, utilize strutting arrangement to provide the top of advancing for shield structure equipment and push away the counter-force, at this moment, because section of jurisdiction erector and main part swing joint can remove section of jurisdiction erector to the main part inside to guarantee that section of jurisdiction erector does not hinder shield structure equipment's normal work. Therefore, the shield equipment can be constructed in soft upper strata and hard rock strata, has a large geological adaptation range, reduces the construction cost and reduces the working efficiency of the shield equipment.
Additional aspects and advantages of the invention will be set forth in part in the description which follows, and in part will be obvious from the description, or may be learned by practice of the invention.
Drawings
The above and/or additional aspects and advantages of the present invention will become apparent and readily appreciated from the following description of the embodiments, taken in conjunction with the accompanying drawings of which:
fig. 1 shows a schematic structural diagram of a shield apparatus provided according to an embodiment of the present invention;
FIG. 2 illustrates a schematic structural view of a second ring provided in accordance with an embodiment of the present invention;
FIG. 3 shows a schematic diagram of the structure from one perspective of the embodiment of FIG. 2;
fig. 4 shows a schematic partial enlargement of the embodiment of fig. 3 at a.
Wherein, the correspondence between the reference numbers and the part names in fig. 1 to 4 is:
100 support devices, 110 first rings, 112 slicing, 120 second rings, 130 telescopic assemblies, 132 inclined wedges, 134 carriages, 136 telescopic parts, 138 sliding grooves, 140 support parts, 142 bodies, 144 supporting legs, 146 groove structures, 200 shield equipment, 210 main bodies, 220 segment erectors, 230 propulsion cylinders and 240 cutterheads.
Detailed Description
In order that the above objects, features and advantages of the present invention can be more clearly understood, a more particular description of the invention will be rendered by reference to the appended drawings. It should be noted that the embodiments and features of the embodiments of the present application may be combined with each other without conflict.
In the following description, numerous specific details are set forth in order to provide a thorough understanding of the present invention, however, the present invention may be practiced in other ways than those specifically described herein, and therefore the scope of the present invention is not limited by the specific embodiments disclosed below.
A support device 100 and a shield apparatus 200 according to some embodiments of the present invention are described below with reference to fig. 1 to 4.
Example 1:
as shown in fig. 1 to 4, according to a first aspect of the present invention, there is provided a supporting device 100, comprising a first ring 110 and a second ring 120, the second ring 120 comprising a plurality of telescopic assemblies 130, wherein the first ring 110 is a force transmission ring and the second ring 120 is a tension ring.
It should be noted that the supporting device 100 provided in the present application is mainly used for the shield apparatus 200, so that the shield apparatus 200 can work without assembling segments during the construction of hard rock strata.
Specifically, as shown in fig. 1 and 2, a plurality of telescopic assemblies 130 are connected in series and distributed along the circumference of the axis of the first ring 110, to splice a portion of the second ring 120, either telescopic assembly 130 includes a ramp 132, the ramp 132 being able to move closer to or further from the axis of the first ring 110 during movement, and thus when the telescopic assembly 130 is actuated to move the wedge 132 away from the axis of the first ring 110, so that the wedge 132 can come into abutment with the wall of the tunnel, since the plurality of telescopic assemblies 130 are sequentially connected, and at least one telescopic assembly 130 is connected to the first ring 110, further, when the shield apparatus 200 tunnels in a hard rock formation section in a TBM mode and the force transmission ring is connected to the main body 210 (e.g., the thrust cylinder 230) of the shield apparatus 200, the shield device 200 is advanced by providing forward pushing reaction force for the shield device 200 by using the friction force between the tapered wedge 132 and the tunnel wall. When the telescopic assembly 130 operates to enable the inclined wedge 132 to approach the axis of the first ring 110, the inclined wedge 132 is separated from the wall of the hole, at this time, the shield equipment 200 may drive the second ring 120 to advance through the first ring 110 to perform the next cycle operation, or the support device 100 may be detached from the main body 210 of the shield equipment 200 to perform the EBP mode tunneling operation suitable for the soft soil stratum section, thereby realizing the switching between the TBM mode tunneling and the EBP mode tunneling of the shield equipment 200 and expanding the application range of the product.
Further, because the supporting device 100 is directly connected with the first ring 110 through the at least one telescopic assembly 130, the connection of a sliding shoe of the supporting device 100 with a force transmission ring through a clamping sleeve in the related art is avoided, the structure is simple and compact, the size is small, the mounting and the dismounting are convenient, the time for switching different working modes of the shield equipment 200 is favorably shortened, the working mode switching efficiency of the shield equipment 200 is improved, the working efficiency of the shield equipment 200 is improved, meanwhile, the simple structure is favorable for reducing the manufacturing cost, and the method is suitable for popularization and application.
Further, the telescopic assembly 130 includes the tapered wedge 132, that is, the telescopic assembly 130 is a tapered wedge mechanism, and the tapered wedge mechanism is a surface contact structure, and has a self-locking function, thereby being beneficial to improving the reliability of the supporting device 100, being capable of meeting the requirements of different propulsion counter forces of the shield equipment 200, expanding the application range of products, ensuring a good tunneling effect, and improving the reliability of product use.
Specifically, at least one telescopic assembly 130 is connected to the first ring 110, and since the plurality of telescopic assemblies 130 are connected in sequence, and the telescopic assemblies 130 of different numbers are connected to the first ring 110, the frictional force generated by the inclined wedges 132 of the plurality of telescopic assemblies 130 abutting against the wall of the hole can provide a thrust for the shield apparatus 200 to advance. Further, on the one hand, any telescopic assembly 130 is connected with the first ring 110, that is, each telescopic assembly 130 is connected with the first ring 110, and on the other hand, one or two telescopic assemblies 130 are connected with the first ring 110, or other numbers of telescopic assemblies 130 are connected with the first ring 110, so that the requirements of different structures of the telescopic assemblies 130 and the first ring 110 can be met, and the application range is wide.
Example 2:
as shown in fig. 1 to 4, in an embodiment of the present invention, on the basis of embodiment 1, further, the telescopic assembly 130 further includes: the sliding frames 134 are connected with the adjacent sliding frames 134, the sliding frames 134 are provided with sliding grooves 138, the bottom walls of the sliding grooves 138 are inclined downwards along the direction from the first ring 110 to the second ring 120, and the inclined wedges 132 are positioned inside the sliding grooves 138; a telescopic part 136, one end of the telescopic part 136 is connected with the sliding frame 134, and the other end is connected with the inclined wedge block 132; wherein, the telescopic part 136 moves telescopically to move the wedge 132 along the sliding slot 138, and the wedge 132 can move close to or away from the axis of the first ring 110.
In this embodiment, as shown in fig. 2, 3 and 4, the telescopic assembly 130 further includes a carriage 134 and a telescopic portion 136, wherein adjacent carriages 134 are connected, the carriage 134 is provided with a sliding slot 138, a bottom wall of the sliding slot 138 is inclined downward in the direction from the first ring 110 to the second ring 120, that is, the bottom wall of the sliding slot 138 is inclined, and the wedge 132 is located inside the sliding slot 138, specifically, a surface of the wedge 132 contacting the bottom wall of the sliding slot 138 is inclined downward in the direction from the first ring 110 to the second ring 120, that is, a surface of the wedge 132 contacting the bottom wall of the sliding slot 138 is an inclined surface. When the telescopic part 136 is telescopically moved to drive the wedge 132 to slide along the sliding groove 138 from the second ring 120 to the first ring 110, the wedge 132 simultaneously moves in a direction away from the axis of the first ring 110, so that the wedge 132 can abut against the tunnel wall, that is, the second ring 120 is supported on the tunnel wall, thereby realizing the supporting operation and providing forward thrust for the shield equipment 200; when the telescopic portion 136 moves telescopically to drive the wedge 132 to slide along the sliding groove 138 from the first ring 110 to the second ring 120, the wedge 132 moves towards the direction close to the axis of the first ring 110, so that the wedge 132 can be separated from the tunnel wall, and the main body 210 of the shield apparatus 200 can drive the first ring 110 and the second ring 120 to advance or move conveniently.
Further, the telescopic part 136 comprises at least one hydraulic cylinder, namely, the hydraulic cylinder is used for connecting the sliding frame 134 and the wedge block 132 and driving the wedge block 132 to slide along the sliding groove 138, the hydraulic cylinder is sensitive and reliable to control, and can realize a self-locking function, so that the working reliability of the telescopic device is improved, and the working reliability of the shield equipment 200 is improved.
Further, on the one hand, the telescopic portion 136 comprises a hydraulic cylinder, i.e. one hydraulic cylinder connects one carriage 134 and one wedge 132, and on the other hand, the telescopic portion 136 comprises two hydraulic cylinders, and one carriage 134 and one wedge 132 are connected by the two hydraulic cylinders, it can be understood that one carriage 134 and one wedge 132 can be connected by other numbers of hydraulic cylinders, and the different numbers of hydraulic cylinders can meet the requirements of different structures of the wedge 132 and the hydraulic cylinder, and the application range is wide.
Specifically, the two hydraulic cylinders are used for connecting the carriage 134 and the wedge block 132, which is beneficial to improving the reliability of the supporting operation of the supporting device 100, and further improving the reliability of the operation of the shield tunneling apparatus 200.
Further, the telescopic part 136 may be of other structures that meet the requirement, for example, the power source of the telescopic part 136 is a motor.
Example 3:
as shown in fig. 1 to 4, in an embodiment of the present invention, in the above embodiment 2, further, the second ring 120 further includes: the supporting portion 140, the plurality of carriages 134 are distributed at two ends of the supporting portion 140, the supporting portion 140 is connected to two adjacent carriages 134, and the supporting portion 140 and the plurality of carriages 134 are spliced to form a ring structure.
In this embodiment, as shown in fig. 2 and 3, the second ring 120 further includes a support portion 140, the plurality of carriages 134 are distributed at two ends of the support portion 140, the support portion 140 is connected to two adjacent carriages 134, the support portion 140 and the plurality of carriages 134 are spliced to form an annular structure, that is, the support portion 140 and the plurality of telescopic assemblies 130 are spliced to form the second ring 120, wherein the support portion 140 is used for contacting with the ground of the tunnel, that is, the support portion 140 supports the plurality of telescopic assemblies 130, so as to ensure that the actions of the telescopic assemblies 130 can be reliably and smoothly performed, further, the inclined wedge blocks 132 are abutted against or separated from the wall of the hole, and further, the reliability of the operation of the support device 100 is.
Further, the supporting portion 140 includes: a body 142, the body 142 being connected to the carriage 134; the legs 144 are disposed on the body 142, and the legs 144 are spaced apart from one side of the body 142 away from the axis of the first ring 110.
Specifically, the support portion 140 includes a body 142 and legs 144, the body 142 is connected to the carriage 134, and the legs 144 are distributed at intervals on one side of the body 142 away from the axis of the first ring 110, that is, the legs 144 contact the ground of the tunnel to realize a supporting function, so that the contact area between the support portion 140 and the ground is reduced, and further, the support portion 140 moves along with the movement of the first ring 110, which is beneficial to improving the advancing efficiency of the shield apparatus 200.
Specifically, the number of the supporting legs 144 is plural, and the arrangement of the plurality of supporting legs 144 is beneficial to improving the reliability and stability of the supporting portion 140, so as to improve the reliability of the product.
Example 4:
as shown in fig. 1 to 4, in the above embodiment 3, further, the body 142 is provided with a groove structure 146, the groove structure 146 penetrates through the body 142 along the axial direction of the first ring 110, the groove structure 146 and the legs 144 are located on the same side of the body 142, and the legs 144 are distributed on two sides of the groove structure 146.
In this embodiment, as shown in fig. 2, the groove structure 146 is disposed on the body 142, and the groove structure 146 and the supporting leg 144 are located on the same side of the body 142 and penetrate through the body 142 along the axial direction of the first ring 110, so that in the operation process of the supporting device 100, if there are residual materials such as crushed stones and soil residues on the tunnel ground on the side of the second ring 120 facing the first ring 110, the residual materials can be transported to the side of the second ring 120 away from the first ring 110 through the groove structure 146, and further the advance of the shield apparatus 200 is not affected, further, when there are few or inconvenient residual materials, the residual materials can be spread in the groove structure 146, and the supporting device 100 can be ensured to advance smoothly under the action of the main body 210 of the shield apparatus 200, and the working efficiency of the shield apparatus 200 is improved.
It is understood that a through groove may be provided on the side of the first ring 110 close to the ground, and the through groove is in communication with the groove structure 146, so as to transport the material remaining in the tunnel on the side of the first ring 110 away from the second ring 120 to the side of the second ring 120 away from the first ring 110 or out of the tunnel through the through groove and the groove structure 146 in sequence.
Further, a plurality of supporting legs 144 are distributed on two sides of the groove structure 146 to ensure that the supporting structure can stably and reliably support a plurality of telescopic assemblies 130, thereby improving the reliability of the product operation.
Example 5:
as shown in fig. 1 to 4, in an embodiment of the present invention, based on the above embodiment 3 or embodiment 4, further, any one of the telescopic assemblies 130 is detachably connected to the first ring 110; the supporting portion 140 is detachably coupled to the first ring 110.
In this embodiment, any telescopic assembly 130 is detachably connected with the first ring 110, and the supporting portion 140 is detachably connected with the first ring 110, so that when the shield apparatus 200 tunnels in a hard rock formation section in a TBM mode, any telescopic assembly 130 and supporting portion 140 are connected with the first ring 110, and the first ring 110 is connected with the main body 210 of the shield apparatus 200, that is, the friction force between the tapered wedges 132 of the plurality of telescopic assemblies 130 and the tunnel wall can be used to provide a reverse thrust for the forward movement of the shield apparatus 200; when the shield equipment 200 tunnels in the soft soil interval in the EBP mode, the main body 210 of the shield equipment 200 is detached from the first ring 110, so that the assembled duct pieces can be used for providing tunneling thrust for the shield equipment 200, the switching of the working modes of the shield equipment 200 is facilitated, the working efficiency is improved, and meanwhile, the structure is simple and the manufacturing cost is reduced.
Further, any telescopic assembly 130 can be detachably connected with the first ring 110, the supporting portion 140 can be detachably connected with the first ring 110, namely, the supporting device 100 is a modular design comprising the first ring 110, a plurality of telescopic assemblies 130 and the supporting portion 140, and further when the supporting device 100 is needed to be used, the rapid installation of each module can be realized through detachable connection, when the supporting device 100 is not needed to be used, the rapid disassembly of each module can be realized through detachable connection, and further the supporting device 100 can be quickly disassembled and assembled in a tunnel, thereby facilitating the switching of the working modes of the shield equipment 200, and being beneficial to improving the working efficiency. In particular, the detachable connection may be a bolt connection, a hinge connection, a snap connection, or the like, as well as other connection means that meet the requirements.
Example 6:
as shown in fig. 1 to 4, in an embodiment of the present invention, on the basis of any one of the above embodiments 1 to 5, further, the first ring 110 includes: the ring comprises a plurality of segments 112, the segments 112 are spliced into a first ring 110, and two adjacent segments 112 are detachably connected.
In this embodiment, splice into first ring 110 through a plurality of burst 112, adjacent two burst 112 are for dismantling the connection, make when needs use strutting arrangement 100, through dismantling the quick installation that connects and realize each burst 112 in order to splice into first ring 110, when need not use strutting arrangement 100, through dismantling the quick dismantlement that connects and realize each burst 112, and then can realize the first ring 110 of quick assembly disassembly in the tunnel, make things convenient for the switching of shield structure equipment 200 mode, be favorable to improving work efficiency.
Further, the shape of any of the segments 112 may be the same or different, and the first ring 110 may be formed by splicing segments 112 of the same shape or splicing segments 112 of different shapes.
Specifically, the segment 112 is a steel pipe segment, or a segment 112 made of other materials meeting the requirement, and further, the segment 112 is an arc-shaped steel pipe segment.
Example 7:
as shown in fig. 1 to 4, according to a second aspect of the present invention, there is provided a shield apparatus 200, including a main body 210 and the support device 100 according to any one of the first aspect, where the main body 210 is detachably connected to the first ring 110, and since the shield apparatus 200 includes the support device 100 according to any one of the above-mentioned aspects, all beneficial effects of the support device 100 are achieved, and details are not repeated herein.
Further, the main body 210 includes a thrust cylinder 230, and the thrust cylinder 230 is detachably coupled to the first ring 110, so that the thrust cylinder 230 can be selectively coupled to or detached from the first ring 110 according to an operation mode of the shield apparatus 200. Specifically, the shield tunneling apparatus further includes an impeller 240, and one end of the thrust cylinder 230 is hinged to the first ring 110, and the other end is connected to the impeller 240.
Further, the shield apparatus 200 further includes: and the segment erector 220 is movably connected with the main body 210.
Specifically, the shield equipment 200 further comprises a segment erector 220, and when construction is performed on a soft upper stratum, forward pushing counter force can be provided for the shield equipment 200 through segments assembled by the segment erector 220. It can be understood that, when shield equipment 200 is under construction in the hard rock stratum, utilize strutting arrangement 100 to provide the top of advancing for shield equipment 200 and push away the counter force, at this moment, because segment erector 220 and main part 210 swing joint, can remove segment erector 220 to inside the main part 210 to guarantee that segment erector 220 does not hinder shield equipment 200's normal work. Therefore, the shield equipment 200 can be constructed in soft upper strata and hard rock strata, the geological adaptation range is large, the construction cost is reduced, and meanwhile the working efficiency of the shield equipment 200 is reduced.
DETAILED DESCRIPTION OF EMBODIMENT (S) OF INVENTION
At present, a supporting device (a pipe sheet-free supporting device) generally utilizes a supporting oil cylinder to drive an upper supporting shoe and a lower supporting shoe to realize supporting, the upper supporting shoe and the lower supporting shoe are connected with a force transmission ring through clamping sleeves, the structure is large and heavy, the manufacturing cost is high, the installation, the use, the propulsion, the disassembly and the like are very difficult, and meanwhile, the shield equipment is more difficult to switch the tunneling modes in a tunnel, so that the construction efficiency is seriously influenced.
As shown in fig. 1, the shield tunneling apparatus 200 provided by the present invention comprises a main body 210, a supporting device 100 and a segment erector 220, specifically, the main body 210 comprises a thrust cylinder 230 and a cutter head 240, one end of the thrust cylinder 230 is connected with the supporting device 100, and the other end is connected with the cutter head 240.
As shown in fig. 2, 3 and 4, the supporting device 100 is of a modular design, and includes a front portion and a rear portion, specifically, the front portion is a first ring 110 (force transmission ring), the rear portion is a second ring 120 (tightening ring), the first ring 110 is formed by assembling a plurality of arc-shaped steel pipe pieces, and the arc-shaped steel pipe pieces are detachably connected with each other. The second ring 120 is formed by assembling a plurality of telescopic assemblies 130 and a support part 140; two telescopic assemblies 130 adjacent to the supporting portion 140 are detachably connected to the supporting portion 140. Each telescopic assembly 130 comprises a telescopic part 136 (a connecting cylinder), a carriage 134 and a wedge block 132, the carriage 134 is provided with a sliding groove 138, the sliding groove 138 is inclined downwards from the direction from the first ring 110 to the second ring 120, the wedge block 132 is arranged in the inclined sliding groove 138 of the carriage 134, one end of the connecting cylinder is fixed on the carriage 134, and the other end of the connecting cylinder is connected with the wedge block 132. The inclined wedge block 132 is driven by the connecting cylinder to move along the inclined chute 138, so as to contact and separate with and from the tunnel wall, thereby realizing the tightening and retraction of the second ring 120.
Further, the second ring 120 is detachably connected to the first ring 110, and the second ring 120 is connected to the thrust cylinder 230 of the shield apparatus 200 in an articulated manner. The first ring 110 is located on the inner side of the tail of the shield apparatus 200 (inside the shield tail), and is connected to a thrust cylinder 230 of the shield apparatus 200; the second ring 120 is connected to the rear portion of the first ring 110, and the second ring 120 is integrally located at the rear portion of the main body of the shield apparatus 200. When the shield apparatus 200 is tunneling in the TBM mode, the telescopic assembly 130 of the support device 100 acts to make the second ring 120 support the tunnel wall tightly, so as to provide a pushing reaction force for the front thrust cylinder 230. Because the flexible subassembly 130 of second ring 120 adopts face contact slide wedge auto-lock structure, its compact structure is simple, can adapt to greatly impel the counter force to and the demand of different impel counter forces, and can realize utilizing section of jurisdiction erector 220 to carry out quick assembly disassembly in the tunnel, be favorable to shortening the switching time of the different mode of operation of shield structure equipment 200, and then improve the efficiency of construction, reduce whole construction cost.
Specifically, the steps of the shield apparatus 200 operating in the TBM mode using the supporting device 100 are as follows:
the method comprises the following steps: the support device 100 is installed. With the segment erector 220, the second ring 120 is installed in the order of the first ring 110, i.e., the second ring 120 is installed first, and then the first ring 110 is installed. Specifically, the segment erector 220 is used for fastening connecting bolts or connecting devices between the carriage 134 of the telescopic assembly 130 and the body 142 of the support part 140 to splice the second ring 120, wherein a certain adjusting gap is left between one side of the second ring 120 far away from the first ring 110 and the assembled segments, and the segment erector 220 is used for fastening the connecting bolts or other connecting devices between the steel pipe segments of the first ring 110 to connect the steel pipe segments with the carriage 134, the body 142 and the propulsion cylinder 230.
Step two: the shield apparatus 200 is propelled in the TBM mode using the support device 100.
1. The inclined wedge block 132 arranged in the second ring 120 at the tail part of the main machine moves along the inclined chute 138 of the sliding frame 134 under the retraction of the connecting oil cylinder (telescopic part 136) to generate radial displacement so as to be contacted with the tunnel wall; when the connecting cylinders (the telescopic parts 136) are retracted to the proper positions, specifically, when the connecting cylinders of the telescopic assemblies 130 are all retracted to the proper positions, the whole second ring 120 is already tightly supported on the surrounding wall, and the thrust of the thrust cylinder 230 at the front end of the first ring 110 is borne by the friction force between the second ring 120 and the surrounding rock of the wall;
2. the piston rod of the thrust cylinder 230 extends until the tail end of the piston rod abuts against the end surface of the first ring 110, wherein part of the tail end of the piston rod of the thrust cylinder 230 is hinged with the end surface of the first ring 110 (the end surface of the end far away from the second ring 120);
3. returning the segment erector 220 to the foremost end of the joist and locking;
4. rotating the cutter head 240 and starting other control systems, slowly increasing the pressure of the thrust cylinder 230 until the expected tunneling parameters, and starting the shield equipment 200 to tunnel without the pipe;
5. completing the excavation distance (for example, 1 m distance) of a stepping cycle, stopping the machine, extending the connecting cylinder, moving the inclined wedge block 132 along the inclined chute 138 of the carriage 134, and generating a certain gap between the second ring 120 and the tunnel wall when the connecting cylinder extends to the proper position;
6. the ram 230 piston rod retracts, simultaneously advancing the first ring 110 and the second ring 120 a step cycle distance (e.g., 1 meter). The connecting cylinders are then retracted to move the wedges 132 along the ramp runners 138 of the carriage 134, and when the connecting cylinders are retracted to their positions, the entire second ring 120 is braced against the tunnel wall, and the thrust cylinders 230 are extended and urged against the end face of the first ring 110 to begin the next drive cycle.
Step three: when the shield tunneling apparatus 200 needs to be switched to the EBP mode, the second ring 120 and the first ring 110 are sequentially detached by the segment erector 220.
The supporting device 100 provided by the invention adopts a surface contact type inclined wedge self-locking structure, has a compact and simple structure, can meet the requirements of different propulsion counter forces of the shield equipment 200, adopts a modular design, each part consists of a plurality of detachable small blocks, and the transportation trolley and the segment erector 220 which are equipped with the shield equipment 200 can be used for carrying out transportation and disassembly in a tunnel, so that the working mode switching time of the shield equipment 200 is shortened, the construction efficiency is improved, and the construction cost of the whole engineering project is reduced.
In the description of the present invention, the terms "plurality" or "a plurality" refer to two or more, and unless otherwise specifically defined, the terms "upper", "lower", and the like indicate orientations or positional relationships based on the orientations or positional relationships illustrated in the drawings, and are only for convenience in describing the present invention and simplifying the description, but do not indicate or imply that the referred device or element must have a specific orientation, be constructed in a specific orientation, and be operated, and thus, should not be construed as limiting the present invention; the terms "connected," "mounted," "secured," and the like are to be construed broadly and include, for example, fixed connections, removable connections, or integral connections; may be directly connected or indirectly connected through an intermediate. The specific meanings of the above terms in the present invention can be understood by those skilled in the art according to specific situations.
In the description of the present invention, the description of the terms "one embodiment," "some embodiments," "specific embodiments," etc., means that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the present invention. In the present invention, the schematic representations of the terms used above do not necessarily refer to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.
The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention, and various modifications and changes may be made by those skilled in the art. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.
Claims (10)
1. A support device, comprising:
a first ring;
a second ring provided at one end of the first ring in an axial direction of the first ring, the second ring including:
the telescopic assemblies are connected with the first ring in sequence and distributed along the circumferential direction of the axis of the first ring;
wherein any of the retraction assemblies includes a ramp block that is movable toward and away from the axis of the first ring during movement.
2. The support device of claim 1, wherein the telescoping assembly further comprises:
the sliding frames are connected with each other, each sliding frame is provided with a sliding groove, the bottom wall of each sliding groove is inclined downwards along the direction from the first ring to the second ring, and the inclined wedge blocks are positioned inside the sliding grooves;
one end of the telescopic part is connected with the sliding frame, and the other end of the telescopic part is connected with the inclined wedge block;
the telescopic part moves telescopically to drive the inclined wedge block to move along the sliding groove, and the inclined wedge block can be close to or far away from the axis of the first ring.
3. The support device of claim 2, wherein the second ring further comprises:
the supporting parts are distributed at two ends of the supporting part, the supporting parts are connected with two adjacent sliding frames, and the supporting parts and the sliding frames are spliced into an annular structure.
4. The support device of claim 3, wherein the support portion comprises:
a body connected with the carriage;
the supporting legs are arranged on the body, and the supporting legs are distributed on one side, away from the axis of the first ring, of the body at intervals.
5. The support device of claim 4,
the body is provided with groove structure, groove structure runs through along the axis direction of first ring the body, groove structure with the landing leg is located the same one side of body, the landing leg distribute in groove structure's both sides.
6. The support device of any one of claims 3 to 5,
any telescopic assembly is detachably connected with the first ring;
the support portion is detachably connected with the first ring.
7. The support device of any one of claims 2 to 5, wherein the telescoping portion comprises:
at least one hydraulic cylinder.
8. The support device of any one of claims 1 to 5, wherein the first ring comprises:
the ring comprises a plurality of fragments which are spliced into the first ring, and two adjacent fragments are detachably connected.
9. A shield apparatus, comprising:
a main body; and
the support device of any one of claims 1 to 8, the body being removably connected to the first ring.
10. The shield apparatus of claim 9, further comprising:
and the segment erector is movably connected with the main body.
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| Application Number | Priority Date | Filing Date | Title |
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| CN202010605296.5A CN111720133B (en) | 2020-06-29 | 2020-06-29 | Supporting device and shield tunneling equipment |
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| Application Number | Priority Date | Filing Date | Title |
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| CN202010605296.5A CN111720133B (en) | 2020-06-29 | 2020-06-29 | Supporting device and shield tunneling equipment |
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| CN111720133A true CN111720133A (en) | 2020-09-29 |
| CN111720133B CN111720133B (en) | 2022-05-31 |
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Cited By (1)
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| CN112761654A (en) * | 2021-01-18 | 2021-05-07 | 中国铁建重工集团股份有限公司 | Soil pressure TBM dual-mode dual-support heading machine and construction method |
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| CN111720133B (en) | 2022-05-31 |
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